Question

List I describes thermodynamic processes in four different systems List II gives the magnitudes (either exactly or as a close approximation) of possible changes in the internal energy of the system due to the process

List I	List II
I	$10^{-3} kg$ of water at $100^{\circ} C$ is converted to steam at the same temperature, at a pressure of $10^5 Pa$ .The volume of the system changes from $10^{-6} m ^3$ to $10^{-3} m ^3$ in the process .Latent heat of water $=2250 kJ / kg$
II	$0.2$ moles of a rigid diatomic ideal gas with volume $V$ at temperature $500 K$ undergoes an isobaric expansion to volume $3 V$ Assume $R=80 Jmol ^{-1} K ^{-1}$
III	On mole of a monatomic ideal gas is compressed adiabatically from volume $V=\frac{1}{3} m ^3$ and pressure $2 kPa$ to volume $\frac{v}{8}$
IV	Three moles of a diatomic ideal gas whose molecules can vibrate, is given $9 kJ$ of heat and undergoes isobaric expansion
	T

Which one of the following options is correct?

• A. I $\rightarrow$ T, II $\rightarrow$ R, III $\rightarrow$ S, IV $\rightarrow$ Q
• B. I $\rightarrow$ S, II $\rightarrow$ P, III $\rightarrow$ T, IV $\rightarrow$ P
• C. I $\rightarrow$ P, II $\rightarrow$ R, III $\rightarrow$ T, IV $\rightarrow$ Q
• D. I $\rightarrow$ Q, II $\rightarrow$ R, III $\rightarrow$ S, IV $\rightarrow$ T

Answer 1

Answer: (C)

I $\rightarrow$ P, II $\rightarrow$ R, III $\rightarrow$ T, IV $\rightarrow$ Q

Answer 2

I $\rightarrow$ P, II $\rightarrow$ R, III $\rightarrow$ T, IV $\rightarrow$ Q